java实现简单解析XML文件功能示例

package demo;import java.io.File;import java.io.IOException;import javax.xml.parsers.DocumentBuilder;import javax.xml.parsers.DocumentBuilderFactory;import javax.xml.parsers.ParserConfigurationException;import org.w3c.dom.Document;import org.w3c.dom.Element;import org.w3c.dom.NodeList;import org.xml.sax.SAXException;public class JieXiXML {  public static void main(String[] args) throws ParserConfigurationException, SAXException, IOException {    DocumentBuilderFactory bdf = DocumentBuilderFactory.newInstance();    DocumentBuilder db = bdf.newDocumentBuilder();    Document document = db.parse(new File("user.xml"));    NodeList list = document.getElementsByTagName("usa");    System.out.println("编程网测试结果：");    for (int i = 0; i < list.getLength(); i++) {      Element element = (Element)list.item(i);      String name = element.getElementsByTagName("name").item(0).getFirstChild().getNodeValue();      System.out.println(name);      String pass = element.getElementsByTagName("pass").item(0).getFirstChild().getNodeValue();      System.out.println(pass);      System.out.println("------------------");      }  }}